Umarex Px4 Storm Air Pistol (Black) The Px4 Storm air pistol is not only a BB gun, but a pellet gun as well. It will shoot either projectile from its revolutionary dual-ended magazine. This 16-shot repeater will have you shooting as fast as you can pull the trigger. There's an 8-shot rotary clip on one end of the stick mag, and another one at the other end. Since it shoots BBs or pellets, you'll have more flexibility with ammo choice. A 12-gram CO2 is easily loaded into the grip and gives you plenty of shots before you need a refill. There's even an accessory rail under the barrel. Like the handgun, it has real blowback action, it really kicks, giving you a feeling of power that most airguns only hope to achieve! Once you start shooting, you won't want to stop, so get lots of RWS pellets, BBs and Walther CO2. Specs Product Group: Air Pistols Brand: Beretta Velocity (FPS): 380 Caliber: 0.177 (4.5mm) Ammo Type: Pellets FPS w/Lead Pellet: 380 Barrel Length: 4.1 Total Length (inches): 7.6 Capacity: 16 Barrel Type: Rifled Front Sight Type: Blade - Fixed Rear Sight Type: Notch - Fixed Action: Semi Auto Safety Type: Manual Power: CO2 Trigger Action: Double - Single